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Code Issues Releases Wiki Activity

Improve SQL statements for getting device reading types

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This commit is contained in:
Starbeamrainbowlabs 2019-11-07 18:43:28 +00:00
parent 0038ba8814
commit 7398260a57
Signed by: sbrl
GPG key ID: 1BE5172E637709C2
3 changed files with 9 additions and 4 deletions
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3
logic/Actions/ListReadingTypes.php
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@ -37,6 +37,7 @@ class ListReadingTypes implements IAction {
// 1: Parse & validate parameters
$device_id = !empty($_GET["device-id"]) ? intval($_GET["device-id"]) : null;
$days_to_analyse = intval($_GET["days"] ?? "1") - 1;
$format = $_GET["format"] ?? "json";
if(!in_array($format, ["json", "csv"])) {
@ -53,7 +54,7 @@ class ListReadingTypes implements IAction {
if(!is_int($device_id))
$data = $this->types_repo->get_all_types();
else
$data = $this->types_repo->get_types_by_device($device_id);
$data = $this->types_repo->get_types_by_device($device_id. $days_to_analyse);
$this->perfcounter->end("sql");
// 1.5: Validate data from database

4
logic/Repositories/IMeasurementTypeRepository.php
View file

@ -32,7 +32,9 @@ interface IMeasurementTypeRepository {
/**
* Gets the all the measurement types ever reported by a given device id.
* @param int $device_id The id of the device to get the reading types for.
* @param int $day_to_analyse The number of days worth fo data to analyse. Defaults to -1, which is everything. Set to 0 for readings recorded in the last 24 hours, which is much faster.
* @return string[] A list of device ids.
*/
public function get_types_by_device(int $device_id);
public function get_types_by_device(int $device_id, int $days_to_analyse);
}

6
logic/Repositories/MariaDBMeasurementTypeRepository.php
View file

@ -81,7 +81,7 @@ class MariaDBMeasurementTypeRepository implements IMeasurementTypeRepository {
)->fetchAll();
}
public function get_types_by_device($device_id) {
public function get_types_by_device($device_id, $days_to_analyse = -1) {
$s = $this->get_static;
$o = $this->get_static_extra;
return $this->database->query(
@ -93,7 +93,9 @@ class MariaDBMeasurementTypeRepository implements IMeasurementTypeRepository {
{$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")}.{$o(MariaDBMeasurementDataRepository::class, "column_metadata_id")} = {$o(MariaDBMeasurementDataRepository::class, "table_name_values")}.{$o(MariaDBMeasurementDataRepository::class, "column_values_reading_id")}
JOIN {$s("table_name")} ON
{$s("table_name")}.{$s("column_id")} = {$o(MariaDBMeasurementDataRepository::class, "table_name_values")}.{$o(MariaDBMeasurementDataRepository::class, "column_values_reading_type")}
WHERE {$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")}.{$o(MariaDBMeasurementDataRepository::class, "column_metadata_device_id")} = :device_id
WHERE
{$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")}.{$o(MariaDBMeasurementDataRepository::class, "column_metadata_device_id")} = :device_id
" . ($days_to_analyse >= 0 ? "AND and DATEDIFF(NOW(),s_or_r) = 0" : "") . "
GROUP BY {$s("table_name")}.{$s("column_id")};", [
"device_id" => $device_id
]